Maryland's rule that regulates small wood boilers (COMAR 26.11.09.11) has been repealed effective February 12, 2018. Since 2015, new residential hydronic heaters sold in the U.S. have been regulated by the U.S. EPA under 40 CFR Part 60, Subpart QQQQ.

The repeal of COMAR 26.11.09.11 removes any redundancy or potential conflict with the federal regulation - this includes the certification requirement for manufacturers who wish to make their units available for sale and use in the State. New residential hydronic heaters made available for sale and use in Maryland are subject to all requirements and standards under 40 CFR Part 60, Subpart QQQQ. For more information, please refer to the following:

As a reminder, state, local and county governments have the authority to enforce applicable provisions under 40 CFR Part 60, Subpart QQQQ, as well as any other applicable state, local and county regulations and ordinances - including nuisance complaints that may arise from the operation of residential hydronic heaters.

• The Surgeon General has determined that there is no safe level of exposure to ambient smoke!

• If you smell even a subtle odor of smoke, you are being exposed to poisonous and carcinogenic chemical compounds!

• Even a brief exposure to smoke raises blood pressure, (no matter what your state of health) and can cause blood clotting, stroke, or heart attack in vulnerable people. Even children experience elevated blood pressure when exposed to smoke!

• Since smoke drastically weakens the lungs' immune system, avoiding smoke is one of the best ways to prevent colds, flu, bronchitis, or risk of an even more serious respiratory illness, such as pneumonia or tuberculosis! Does your child have the flu? Chances are they have been exposed to ambient smoke!